Java api generation for ioam trace plugin

Makefile, configure, jvpp changes follow snat plugin jvpp
Fixes trace api handling for endianess

Change-Id: Id5c950ed3c85d5e0dc28ba31b580987baa1b133f
Signed-off-by: Shwetha <shwethab@cisco.com>

5 files changed, 173 insertions, 8 deletions

diff --git a/plugins/ioam-plugin/ioam/lib-trace/jvpp_ioam_trace.c b/plugins/ioam-plugin/ioam/lib-trace/jvpp_ioam_trace.c
new file mode 100644
index 00000000000..3b573506ec6
--- /dev/null
+++ b/plugins/ioam-plugin/ioam/lib-trace/jvpp_ioam_trace.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/vnet.h>
+
+#include <ioam/lib-trace/trace_msg_enum.h>
+#define vl_typedefs             /* define message structures */
+#include <ioam/lib-trace/trace_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun
+#include <ioam/lib-trace/trace_all_api_h.h>
+#undef vl_endianfun
+
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <ioam/lib-trace/trace_all_api_h.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <ioam/lib-trace/trace_all_api_h.h>
+#undef vl_api_version
+
+#include <vnet/api_errno.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+
+#if VPPJNI_DEBUG == 1
+  #define DEBUG_LOG(...) clib_warning(__VA_ARGS__)
+#else
+  #define DEBUG_LOG(...)
+#endif
+
+#include <jvpp-common/jvpp_common.h>
+
+#include "ioam/jvpp/io_fd_vpp_jvpp_ioamtrace_JVppIoamtraceImpl.h"
+#include "jvpp_ioam_trace.h"
+#include "ioam/jvpp/jvpp_ioam_trace_gen.h"
+
+/*
+ * Class:     io_fd_vpp_jvpp_ioamtrace_JVppIoamtraceImpl
+ * Method:    init0
+ * Signature: (JI)V
+ */
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_ioamtrace_JVppIoamtraceImpl_init0
+  (JNIEnv *env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index) {
+  ioamtrace_main_t * plugin_main = &ioamtrace_main;
+  u8 * name;
+  clib_warning ("Java_io_fd_vpp_jvpp_ioamtrace_JVppIoamtraceImpl_init0");
+
+  plugin_main->my_client_index = my_client_index;
+  plugin_main->vl_input_queue = (unix_shared_memory_queue_t *)queue_address;
+
+    name = format (0, "ioam_trace_%08x%c", api_version, 0);
+    plugin_main->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
+
+  plugin_main->callbackObject = (*env)->NewGlobalRef(env, callback);
+  plugin_main->callbackClass = (jclass)(*env)->NewGlobalRef(env, (*env)->GetObjectClass(env, callback));
+
+    #define _(N,n)                                  \
+        vl_msg_api_set_handlers(VL_API_##N + plugin_main->msg_id_base, #n,     \
+                vl_api_##n##_t_handler,             \
+                vl_noop_handler,                    \
+                vl_api_##n##_t_endian,              \
+                vl_api_##n##_t_print,               \
+                sizeof(vl_api_##n##_t), 1);
+        foreach_api_reply_handler;
+    #undef _
+}
+
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_ioamtrace_JVppIoamtraceImpl_close0
+(JNIEnv *env, jclass clazz) {
+  ioamtrace_main_t * plugin_main = &ioamtrace_main;
+
+    // cleanup:
+    (*env)->DeleteGlobalRef(env, plugin_main->callbackClass);
+    (*env)->DeleteGlobalRef(env, plugin_main->callbackObject);
+
+    plugin_main->callbackClass = NULL;
+    plugin_main->callbackObject = NULL;
+}
+
+/* Attach thread to JVM and cache class references when initiating JVPP iOAM Trace */
+jint JNI_OnLoad(JavaVM *vm, void *reserved) {
+    JNIEnv* env;
+
+    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
+        return JNI_EVERSION;
+    }
+
+    if (cache_class_references(env) != 0) {
+        clib_warning ("Failed to cache class references\n");
+        return JNI_ERR;
+    }
+
+    return JNI_VERSION_1_8;
+}
+
+/* Clean up cached references when disposing JVPP iOAM Trace */
+void JNI_OnUnload(JavaVM *vm, void *reserved) {
+    JNIEnv* env;
+    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_8) != JNI_OK) {
+        return;
+    }
+    delete_class_references(env);
+}
diff --git a/plugins/ioam-plugin/ioam/lib-trace/jvpp_ioam_trace.h b/plugins/ioam-plugin/ioam/lib-trace/jvpp_ioam_trace.h
new file mode 100644
index 00000000000..1bb0ca683c8
--- /dev/null
+++ b/plugins/ioam-plugin/ioam/lib-trace/jvpp_ioam_trace.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __included_jvpp_ioam_trace_h__
+#define __included_jvpp_ioam_trace_h__
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/api_errno.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <jni.h>
+
+/* Global state for JVPP-IOAM-TRACE */
+typedef struct {
+    /* Base message index for the nsh plugin */
+    u16 msg_id_base;
+
+    /* Pointer to shared memory queue */
+    unix_shared_memory_queue_t * vl_input_queue;
+
+    /* VPP api client index */
+    u32 my_client_index;
+
+    /* Callback object and class references enabling asynchronous Java calls */
+    jobject callbackObject;
+    jclass callbackClass;
+
+} ioamtrace_main_t;
+
+ioamtrace_main_t ioamtrace_main __attribute__((aligned (64)));
+
+
+#endif /* __included_jvpp_ioam_trace_h__ */
diff --git a/plugins/ioam-plugin/ioam/lib-trace/trace.api b/plugins/ioam-plugin/ioam/lib-trace/trace.api
index b5886b2a275..016dd24c976 100644
--- a/plugins/ioam-plugin/ioam/lib-trace/trace.api
+++ b/plugins/ioam-plugin/ioam/lib-trace/trace.api
@@ -28,8 +28,8 @@ define trace_profile_add {
   u32 context;
   u8 trace_type;
   u8 num_elts;
+  u8 trace_tsp;
   u32 node_id;
-  u32 trace_tsp;
   u32 app_data;
 };
 
diff --git a/plugins/ioam-plugin/ioam/lib-trace/trace_api.c b/plugins/ioam-plugin/ioam/lib-trace/trace_api.c
index 1b8ad3cc0d6..b98e65fb320 100644
--- a/plugins/ioam-plugin/ioam/lib-trace/trace_api.c
+++ b/plugins/ioam-plugin/ioam/lib-trace/trace_api.c
@@ -112,7 +112,8 @@ static void vl_api_trace_profile_add_t_handler
     {
       rv =
 	trace_profile_create (profile, mp->trace_type, mp->num_elts,
-			      mp->trace_tsp, mp->node_id, mp->app_data);
+			      mp->trace_tsp, ntohl (mp->node_id),
+			      ntohl (mp->app_data));
       if (rv != 0)
 	goto ERROROUT;
     }
@@ -186,7 +187,7 @@ trace_init (vlib_main_t * vm)
 
   bzero (sm, sizeof (trace_main));
   (void) trace_util_init ();
-  name = format (0, "trace_%08x%c", api_version, 0);
+  name = format (0, "ioam_trace_%08x%c", api_version, 0);
 
   /* Ask for a correctly-sized block of API message decode slots */
   sm->msg_id_base = vl_msg_api_get_msg_ids
diff --git a/plugins/ioam-plugin/ioam/lib-trace/trace_test.c b/plugins/ioam-plugin/ioam/lib-trace/trace_test.c
index dc3851bec16..8385582f438 100644
--- a/plugins/ioam-plugin/ioam/lib-trace/trace_test.c
+++ b/plugins/ioam-plugin/ioam/lib-trace/trace_test.c
@@ -136,7 +136,7 @@ api_trace_profile_add (vat_main_t * vam)
   int rv = 0;
   u32 node_id = 0;
   u32 app_data = 0;
-  u32 trace_tsp = 0;
+  u8 trace_tsp = 0;
   f64 timeout;
 
   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
@@ -160,9 +160,9 @@ api_trace_profile_add (vat_main_t * vam)
   M (TRACE_PROFILE_ADD, trace_profile_add);
 
   mp->trace_type = trace_type;
-  mp->trace_tsp = ntohl (trace_tsp);
-  mp->node_id = ntohl (node_id);
-  mp->app_data = ntohl (app_data);
+  mp->trace_tsp = trace_tsp;
+  mp->node_id = htonl (node_id);
+  mp->app_data = htonl (app_data);
   mp->num_elts = num_elts;
 
   S;
@@ -231,7 +231,7 @@ vat_plugin_register (vat_main_t * vam)
 
   sm->vat_main = vam;
 
-  name = format (0, "trace_%08x%c", api_version, 0);
+  name = format (0, "ioam_trace_%08x%c", api_version, 0);
   sm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
 
   if (sm->msg_id_base != (u16) ~ 0)